The Global Aquaculture Performance Index (GAPI) is a tool developed to assess the environmental performance of the world's marine finfish aquaculture industry. For the first time diverse products, regardless of species or country of origin could be compared directly in terms of the ecological performance. Further, GAPI analyses make explicit the significant differences in performance when a product is considered in a normalized context (performance per metric tonne) vs. cumulative impact (performance per total country production). Normalized figures are industry standards but ecologically irrelevant. GAPI makes this dichotomy clear. Full reports, data and explanation of methods can be found on the GAPI page or the journal article here.